Rock-crusher



l (No Model.) 2 sheets-sheet 1.

J. o. BOSWORTH.

I ROCK GRUSHER. No. 342,999. A Patented June 1, 1886.

Zttomey N, Ferias nwwuwsnwr. w-ainsw D F (No Model.) 2 sheets-sheet 2.

J. 0. BOSWORTH.

. ROCK GRUSHBR. No. 342,999. Patented June 1, 1886.

HHHHHIIHIHIHIIIIIU Attorney UNITED` STATES PATENT f OFFICE.

JOAB O. BOSVVORTH, OF DENVER, COLORADO.

ROCK-CRUSHER.

UPECIFICATIN forming part of Letters Patent No. 342,999, dated June 1,1886.

Application filed August 25, 1855.

therein to the accompanying drawings, iny

which- Figure lis a side elevation of a rockcrusher constructedaccording to my invention; Fig. 2, an end elevation; Fig. 3, a verticallongitudinal section; Fig. 4 a plan, and Fig. 5 a perspective detail.

This invention relates to rock-crushers of that class wherein togglesare employed to give the jaw avibrating movement; and the inventionconsistsin the peculiar constructions and combinations of parts,hereinafter more particularly described, and then pointed out in theclaims.

Referring to the details of construction as shown in the drawings, Arepresents the frame, which may be of any suitable form; B, the shaft,having a crank, C, formed thereon, which carries the connecting-rod D,that 0perates the toggles E E, which give motion to the vibrating jaw F,which carries a removable chilled face, G, operating against theremovable face H of the xed jaw, both of which faces are preferablycurved at the top and bottom, and may be fixed in their respectivepositions by any suitable means; but I prefer the means shown, whichconsist in the face-plate G of a dovetail and key, and in the face-plateH of a I ug andpin. By this means the faces may be readily reversed whenpartly worn or removed when entirely worn out.

The jaw F is provided with a long heel, f, having a circular surface, I,which fits into a bearing-block, J, set transversely into aperturesformed in the frame, and behind said block are set shims77 or thin metalplates K, bearing against the walls of the apertures, for adjusting thewidth of the opening between the bottoms of the jaws.

The jaw F, it will be seen, is of peculiar form, and it has the heel onwhich it works set at a considerable distance in the rear of its face,the distance from the heel to the bottom of the face of the jaw beingabout two-thirds Serial No. 175,321. (No model.)

,tal motion of the upper end of the jaw.

of the length of the face. This construction will give a vertical motionat the bottom of the face equal to about two-thirds the horizci- .Y thismeans the feeding of the material is much facilitated, and a grinding aswell as a crushing action takes place at the bottom of the jaws.

Around the apertures in the frame through which the bearing-block J ispassed I cast a projection, a, onefor each aperture, as a means ofstrengthening the frame in this place,which may in large size crushersbe placed on the outside, as shown iir'Fig. 4, thus giving thebearing-block J a chance to break (it being a cheap piece to replace)should anything fall into the Crusher that would give it too severe astrain. The box J and shims K are kept in position by the removablecovers M (shown in Figs. l and 2) or by any other suitable means. At Qis shown a rod connected to the jaw F and passing through the frame A,and provided with a nut, I?, and spring S, for the purpose-f of holdingthe movable jaw taut against ther toggls and taking up any lost motionwhich mayoecur. I make the pitman of such length that the toggle risesand falls about an equal distance above and below a straight line, bywhich means the jaw has two motions to each revolution of the'fly-wheel. In some cases I may omit the rod Q and connect the toggleswith pins, as shown in dotted lines in Fig. l.

I have shown but one fly-wheel in Figs. 1, 2, and 8; but I generally,when used in the laboratory and worked by hand, prefer to use two, asshown in Fig. 4, and when intended for power I add a belt-pulley, asshown in the same figure.

I have shown the frames as made .entirely of cast-iron5 but in somecases I intend to use tension-rods, as shown in dotted lines in Fig. 4.

By the construction shown and described a rock-crusher may be cheaplymade that will be found to be very powerful, and one that will not beliable to get out of order or to be broken in any principal part undersevere strains, and will also be found to be very efficient in action,as, owing to the peculiar arrangement of the parts, there is a grindingaction as well as a crushing one, that will be found to add greatly tothe capacity of 'such machines.

ICO

is provided with apertures, as shown,whereby the bearing-block and shimsmay be readily gotten at and adj usted or repaired, as occasion mayrequire. I also attach importance to the projections a, cast around saidapertures, by which the frame is greatly strengthened at this place.

Vhat I claim as new is- 1. In a rock-Crusher, the combi nation,with theframe A, provided with apertures, as described, ofthe bearing-blookJ,set transversely into said apertures, the shims K behind said block,the vibrating jaw F, having heel j', provided with circular surface I,engaging the groove in said block, and thepivoted covers M to theapertures in the frame, substantially as and for the purposes specified.

2. The combination, with the frame A, provided with apertures, asdescribed ,of the block J set transversely into said apertures, the 2oshims K behind said block, the vibrating jaw F, provided with heel f,seated in said block, and the proj eetions a, cast about the aperturesin said frame for strengthening the same at that place, substantially asdescribed.

In testimony whereof I affix my signature, in presence of two witnesses,this 10th day of August, 1885. 1

JOAB O. BOSVVORTH.

Vitnesses:

W. T. CoRNWALL, CHAs. B. KIPP.

